Being from western Kansas with no local aquarium stores closer than a 350 mile radius it's a bit challenging finding quality livestock for my tank. Penny at AquaCorals is AWESOME! I just received my first two nems ever and the minute I placed them in my tank they ballooned up and displayed their beautiful colors! I was so amazed. One moved around his rock placement about 3 inches and seems super healthy. He spreads out approx 4"! The 2" rainbow tip nem has his foot placed well in a hole and his little balloons are adorable and I watched him eat some fish food this morning! ? Thank you Penny for such healthy nems!!!